/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.sql.parser.hive.ddl;

import org.apache.flink.sql.parser.dql.SqlRichDescribeTable;

import org.apache.calcite.sql.SqlIdentifier;
import org.apache.calcite.sql.SqlWriter;
import org.apache.calcite.sql.parser.SqlParserPos;

/** DESCRIBE DDL to describe a Hive table. */
public class SqlDescribeHiveTable extends SqlRichDescribeTable {

    private final boolean extended;
    private final boolean formatted;

    public SqlDescribeHiveTable(
            SqlParserPos pos,
            SqlIdentifier tableNameIdentifier,
            boolean extended,
            boolean formatted) {
        super(pos, tableNameIdentifier, extended || formatted);
        this.extended = extended;
        this.formatted = formatted;
    }

    @Override
    public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
        writer.keyword("DESCRIBE");
        if (extended) {
            writer.keyword("EXTENDED");
        } else if (formatted) {
            writer.keyword("FORMATTED");
        }
        tableNameIdentifier.unparse(writer, leftPrec, rightPrec);
    }
}
